Results 11 to 20 of about 2,656,572 (80)
Asian Journal of Surgery, 2020 Summary: Background: Management of antiplatelet agents and other chronic anticoagulation medications in patients scheduled for surgery can reduce intraoperative bleeding complications. However, few studies on the association of antithrombotics, relative
Young Mi Jeong +8 more
doaj
Observation of the near-threshold intruder $0^-$ resonance in $^{12}$Be [PDF]
, 2021 A resonant state at $3.21^{+0.12}_{-0.04}$\,MeV, located just above the one-neutron separation threshold, was observed for the first time in $^{12}$Be from the $^{11}$Be\,$(d,p)^{12}$Be one-neutron transfer reaction in inverse kinematics. This state is assigned a spin-parity of $0^-$, according to the distorted-wave Born approximation (DWBA) and decay ...
arxiv +1 more source
Discovery of TeV gamma-ray emission from PKS 0447-439 and derivation of an upper limit on its redshift [PDF]
, 2013 Very high-energy gamma-ray emission from PKS 0447-439 was detected with the H.E.S.S. Cherenkov telescope array in December 2009. This blazar is one of the brightest extragalactic objects in the Fermi Bright Source List and has a hard spectrum in the MeV to GeV range.
arxiv +1 more source
Discovery of the source HESS J1356-645 associated with the young and energetic PSR J1357-6429 [PDF]
, 2011 Several newly discovered very-high-energy (VHE; E > 100 GeV) gamma-ray sources in the Galaxy are thought to be associated with energetic pulsars. Among them, middle-aged (> 1E+4 yr) systems exhibit large centre-filled VHE nebulae, offset from the pulsar position, which result from the complex relationship between the pulsar wind and the surrounding ...
arxiv +1 more source
Science Case for the new High-Intensity Muon Beams HIMB at PSI [PDF]
arXiv, 2021 In April 2021, scientists active in muon physics met to discuss and work out the physics case for the new High-Intensity Muon Beams (HIMB) project at PSI that could deliver of order $10^{10}$\,s$^{-1}$ surface muons to experiments. Ideas and concrete proposals were further substantiated over the following months and assembled in the present document ...
arxiv
An RF-only ion-funnel for extraction from high-pressure gases [PDF]
Int. J. Mass Spec. 379 (2015), 2014 An RF ion-funnel technique has been developed to extract ions from a high-pressure (10 bar) noble-gas environment into vacuum ($10^{-6}$ mbar). Detailed simulations have been performed and a prototype has been developed for the purpose of extracting $^{136}$Ba ions from Xe gas with high efficiency.
arxiv +1 more source
Towards Measuring the Ground State Hyperfine Splitting of Antihydrogen -- A Progress Report [PDF]
, 2016 We report the successful commissioning and testing of a dedicated field-ioniser chamber for measuring principal quantum number distributions in antihydrogen as part of the ASACUSA hyperfine spectroscopy apparatus. The new chamber is combined with a beam normalisation detector that consists of plastic scintillators and a retractable passivated implanted
arxiv +1 more source
Measurement of the $^{239}$Pu(n,f)/$^{235}$U(n,f) Cross-Section Ratio with the NIFFTE fission Time Projection Chamber [PDF]
arXiv, 2021 The $^{239}$Pu(n,f)/$^{235}$U(n,f) cross-section ratio has been measured with the fission Time Projection Chamber (fissionTPC) from 100 keV to 100 MeV. The fissionTPC provides three-dimensional reconstruction of fission-fragment ionization profiles, allowing for a precise quantification of measurement uncertainties. The measurement was performed at the
arxiv
Revista da Sociedade Brasileira de Medicina Tropical, 2011 INTRODUÇÃO: A contagem de células CD4+ representa marcador da resposta imune celular em pacientes infectados pelo HIV-1. Testes cutâneos de hipersensibilidade tardia (DTH) podem ser empregados para avaliar in vivo respostas celulares a antígenos comuns ...
Natalia Moriya Xavier da Costa +4 more
doaj
Measurement of Hadronic Mass Moments $\langle M_X^n \rangle $ in $B \rightarrow X_c \ell ν$ Decays at Belle II [PDF]
arXiv, 2020 We present measurements of the first six hadronic mass moments in semileptonic $B \rightarrow X_c \ell \nu $ decays. The hadronic mass moments, together with other observables of inclusive $B$ decays, can be used to determine the CKM matrix element $|{V_{cb}}|$ and mass of the $b$-quark $m_b$ in the context of Heavy Quark Expansions of QCD.
arxiv